DNA & genes Flashcards
1
Q
how can the shape of a DNA strand be described
A
double helix structure
2
Q
what does DNA strands contain
A
series of nucleotides
3
Q
what does each nucleotide consist of (3)
A
1) deoxyribose (sugar)
2) phosphate
3) nitrogenous base
4
Q
what are the 4 nitrogenous bases + their sign
A
1) adenine (A)
2) thymine (T)
3) cytosine (C)
4) guanine (G)
5
Q
pairing of bases: which base
goes with with
A
A+T/T+A
C+G/G+C
6
Q
what’s a gene
A
a segment of DNA containing the instructions to make protein
7
Q
how is a gene created
A
a sequence of bases (A,T,C,G)
8
Q
what a genome
A
all of the genes we receive from
our parents put together
